Appropriate Technology, Development - Next Steps...

2nd Prototype...The Happy Doomsday Stove II

Modifications to the prototype 1 stove including :

welding pieces of steel ingaps where rice hulls fell through
Cutting a larger opening in the bottom where rice hulls burn
Adding in cylindrical tubes from the bottom of the stove for increased air flow to the fire

Testing Results:

Could not get fire to be self sufficient.
Had trouble getting the rice hulls to light. They continually burnt out, even with an oxygen being fed to the fire via and oxygen tank.

Possible Changes/Additions

Cut length of air pipes on outside
Make air pipes on the interior taller
Mesh grading on various widths (larger than the rice hulls) that can be moved to change the flow of the rice hulls
Modify gap that rice hulls flow through

NEXT STEPS

Build a new stove!
- use lighter material than the steel on above stove
- make stove versatile to burning different materials
- allow chutes and burn tray to be adjustable

GO BACK